/Engine/Plugins/Online/OnlineSubsystem/Source/Public/Interfaces/OnlinePartyInterface.h
enum ECreatePartyCompletionResult { UnknownClientFailure = -100, AlreadyInPartyOfSpecifiedType, AlreadyCreatingParty, AlreadyInParty, FailedToCreateMucRoom, NoResponse, LoggedOut, NotPrimaryUser, UnknownInternalFailure = 0, Succeeded = 1, }